长江三角洲城市内河环境治理的居民支付意愿比较研究 ——上海、南京与杭州实例调查

应用意愿价值评估法(CVM)的技术调查上海、南京和杭州城市内河环境治理的居民支付意愿,并探讨研究结果是否在城市间保持稳定.基于1258份问卷的统计分析,结果显示:上海、南京和杭州居民的支付意愿均值分别为20.5,25.4,20.3元/(户×月);进一步的线性对数模型分析结果表明,收入、环境意识等变量在3城市都呈现显著影响,而户籍、教育等因素在各城市模型中存在显著性差异;3城市混合数据模型显示,南京样本支付意愿显著高于其他2城市样本,杭州与上海调查样本无显著性差异.上述结果揭示了不同城市居民对城市内河治理的支付意愿呈现稳定性,为意愿价值评估法在我国不同区域间的“效益转移”研究提供了实证支持.但另一方面,参数模型表现出一定的差异,需要对模型作进一步的优化.

Comparison study on willingness to pay for urban river restoration in Yangtze Delta:Cases study in Shanghai,Nanjing and Hangzhou,China

Surveys was carried out to studied residents’ willingness to pay (WTP) for urban river restoration in the three key cities of Yangtze Delta, i.e., Shanghai, Nanjing and Hangzhou, as well as the WTP’s differences among the three cities employing some survey techniques in Contingent valuation method (CVM). Based on the 1258 questionnaires, the results of statistical analysis showed that: the means of WTP for Shanghai, Nanjing and Hangzhou were 20.5, 25.4, and 20.3 Yuan per household per month, respectively. Using linear logarithmic model, income and environmental awareness were found statistically significant on WTP in three cities. The impacts of household registration and education appeard differently on WTP in the three cities. The aggregated model of cities showed that WTP in Nanjing was significantly higher than the other two cities, and there was no significant difference of WTP between Hangzhou and Shanghai. The WTP acquired appeared to be consistent in the three cities, which provided a strong empirical support for investigation on WTP’s benefit transfer between the different regions in China. However, the impact of factors on WTP varied in different cities. Thus, the model should be improved for deeply understanding on the differences in the further study.